Rachael Leigh Cook Welcomes A Baby Girl!

Congratulations are in order for Rachael Leigh Cook and Daniel Gillies.

The Perception actress, 33, and her writer-director husband welcomed their first child—a daughter—the proud dad announced via Twitter on September 29. "It's a girl. The tiny new empress of my everything," Gillies gushed. "She's immaculate. We're delirious."

The couple—wed since 2004—have talked about waiting to start a family. "We got married incredibly fast," Cook shared. "We got engaged after dating for maybe five months and we got married a couple of months after that."